Automatic tempo-regulator.



P. B. OLSON.

AUTOMATIC TEMPO REGULATOR.

APPLICATIION FILED A11111.31, 1912.

UNITED sTATes 'PATENT onirica,

lAUL B. OLSON, OF CHICAGO, ILLINOIS.

AUTOMATIC 'micro-REGULATOR.

To all fwe om, may concern if l115e 'it known that L PAUL B. resident4 of Chicago, in the county of Cook and Statel of Illinois, have invented' certain new and useful'Improvenicnts in Automatic Tempo-Regulators, of which the following a specification.

My invention relates to automatic tempo regulator mechanism, an arrangement to be used in connection with pneumatically operated instruments to automatically conit'rol the speed of travel ofthe music sheet over the tracker board to thereby control theitemfpo, i

One ofthe important objects of the invent-ion is to provide improved piston mechanisnrforcontrolling the throttle valve of" the' motor which propels the music Sheet and y to cause positive actuation of the'piston mechanism by means vof compressed air.

noth'er object is tof provide improved valvemechanism'whose operation is controlled by the passage otthe 'music sheetoverl'the tracker 'board' and 'Whicll in turn controls the Vtloiv of compressed air t0 either sideofthe throttlevalve.

theinvention are adapted to be carried out by themcchanism shown in the accompanying drawingthe drawing showing more or prisesa chest connectedlat its upperand `Lower ends through ducts 7 and S with the motorandnsuction source respectively. An i intermediate vWall y 9; forms the valve seat and has 'the passageway'lO, va valve 11 cooperlitinp; With-the passageway to control the .fjloiv4 otair from the motor toivardfthe suction source` or in other 'Words to lcontrol the speed et the motor. ,y

Describing' non' themechanism for automatically adjustingjhe valve 11 to thereby automatically adjust the speedot1 the motor` specification of Letters Patent.

OLsoN, a

Th'escand other yobjects and features of.

less"diagrammatically the valve construc-` ti'mr and, arrangement and coperatie-n there-v on the motor is centrolledby suitable throt-m tle valve mech amsm.-

PatenterlvOct. 28, 1913;

Application led August 31, 1912. Serial No. 718,021.

and travel of the music sheet, the valve stem 12 of valve 11 is connected with a piston 13 reciprocable in cylinder 14.` Seated on top of this cylinder is a' valve block 15 having adjacent its ends the exhaust outlets 17 and 18 for cooperating with exhaust ports .19 and 2O through the upper Wall ot the cylinder. -Extending from the ends of the valve block 15 are rods 21 and 22 terminating in'pistons `255 and 24 respectively, these pistons operating in the auxiliary cylinders 25 and 26 supported from the end Walls of cylinder 14. Auxiliary cylinder 25 communicates through duct 27 with the leftl end ,of cylinder A14@ and auxiliary cylinder 26 v lcommunicates through duct 28 With the vthe piston 13 and closed, the opposite exhaust outlets.

For automatically controlling the applica Vlfith this arrangement,

Sti

tion of pressure to theanxiliary cylinders 1n y accordance withv the tempo desired, valve mechanism 1s associated with the tracker hoard. A chest 29 has connection through conductor 30 with a suitable pressure'lsonrce Isuclras a motor or bellows, the ends of the chest being connected through conductorsiA .31 and 32 with the outer ends of auxiliary f cylinders 25 and 26- respectively. Partitions@ 33 and 34 Withinfthis chest forni Seats for',v

valves. and `36, thesevalves ,cooperating with ports 37 and` 38 respectively :to control the supply of pressure Yto the auxiliary cylinders. Above the chest 29 is the structure 39 for suppvortinr pneumatic mechanism for controllingr the valves 35 and 36. VTivo pockets 40 and 4l are provided yover which diaphragme 42 and 43 are applied and connectedat their centers with the stems lt and .l5 extending upwardly trom/the valves 35 and 3G respectively. vCompression springs '17 and 48 in pockets 40 and 41 tendto `expand the respective diaphrapms vout et the pockets. These pockets` are, lhoivcver, gconnected.

through conductor 49 with a suction source so that if the pockets 40 and 41 are other wise closed the diaphragme will be drawn into the pockets by the suction effect so that the valves 35 and 36 are held up to revent flow' of pressure' to .the auxiliary cy inders. As soon as either pocket is opened to atmosphere, the suction effect on the diaphragm will be destroyed land the spring will throw the diaphragm outwardly to effect opening* of the respective valve so that pressure can iiow to the corresponding auxiliary cylinder and the motor throttle valve correspondingly adjusted. Such 'relief of the pockets is controlled from the tracker board and the music sheet travelingxthereover.A As shown, pocket 40 connects through conductor 50 with tracker board-passageway 51, while pocket 41 connects through conductor 52 with tracker board passageway 53, the music. sheet 2 having the slots 54 at desired locations to open to atmosphere at the proper time the respective valve controlling pocket so that the mu' ic sheet is automatically either accelerategl or retarded at the proper time. As shown pocket 41 is openedl to atmosphere through one of the slots 54 while the music sheet still closes pocket 40 against atmosphere. Suction is effected in pocket 40 `to hold the diaphragm in the valve 35 in closed position while diaphragm 43 has been r'eleased from suction effect and has been thrown outwardly to move the valve 36 to allow fluid under pressure to flow through port 38 and conductor 32 to auxiliary cylinder 26. As a result of this, piston 24 Ain. auxiliary cylinder 26 has been shifted in'- w'ardly and conductor 28 exposed so that the pressure is also admitted lto the left of piston 13. Inward shifting of piston 24 havin caused movement of valve block 15 towardv the left to close the exhaust outlets 20 and 18 and to close the exhaust outlets 17 and 19 in advance of thepiston 13. Upon such movement of piston13 throttle valve 11 is carried toward the left to close more of the .passageway so that the motor 4v andthe jjnusic sheet 2 are retarded. If the tracker board passageway 51 were opened and pas-` sageway 53 closed Athen valve 35 would be opened and valve 36 closed and auxiliary cylinder 25 being connected with the pressure chest valve would be shifted to the right and piston 13 shifted to move throttle valve 15 to expose more of the passageway 10 so that vthe motor and music sheet would be accelerated. Inl this manner the tempo is automatically adjusted. The degree of accoloration 4and retardation is controlled by the duration of. exposure of the respective tracker board passageway to atmosphere, the distance of movement of piston 13 being con- ,tl'olled' by the amount of fluid under pressure admittedto cylinder 14.

r operation disclosedas changes and modifica- 65 I thus provide throttle valve adjusting tions can be made'vvhich would still comev within the scopeoi' tli'e'invention and l I claim, the following:

1. In automati''regulator tempo mechanism, the combination of a main cylinder, a piston for said cylinder, a throttle Avalve l connected with said piston, an auxiliary cylinder at each end of said maincylinder and a connection connecting each auxiliary cylinder with the respective end of the main cylinder, a piston valve in each auxiliary cylinder, a tracker board and a music sheet traveling thereover, a source of fluid pres. sure, means controlled by the passage of the music sheet over the tracker board for controlling the connection of eitherauxiliary cylinder with said ressure' source, movement of a piston va ve in response to Huid under pressure causing connection of the respective ends of the main cylinder to receive fluid under pressure from said auxiliary cylinder whereby the piston within said main cylinder is actuated, and a slide valve 10c actuated in common by said piston valves to control the exhaust from the respective sides of said main cylinder piston.

2.. In automatic tempo regulator mechanism, the combination with a tracker board, a music sheet l'and a motor for driving said music sheet over the tracker board,. ,of a throttle valve for said motor, a main cylinder having a piston connected with said throttle valve, aI source' of pressure, valve mechanism `for controlling the connection of said pressure source with eitherl end of said main cylinder and t0 either side of said piston, a pneumatic compartment closed by a diaphragm at one side connected with each one of said valves, a source of suction connected with said compartments, said compartments being connected with respective openings in said tracker board, said suction being effective 'in said compartments upon closure of said, tracker board passageways and'being ineffective upon opening of such passageways, said diaphragms when influenced by suction being moved to close the respective valve, and means for shifting the diaphragms to open the valves when the suction effect thereon is removed.

3. In automatic tempo regulator mechanism, the combination of a main cylinder, a piston within said cylinder, a throttle valve 130 -connected with said piston, an auxiliary cylinder at each end ofsaid main cylinder and having connection therewith, a piston in each of said auxiliary cylinders, exhaust valve mechanism for said main cylinder controlled by said auxiliary cylinders and pistons, a tracker board and music sheet, and means controlled by the passage of the music sheet over the tracker board for controlling application of fluid to said cylinders for operating said main cylinder piston and thereby said throttle valve.

4. In automatic tempo regulator mechanism, the combination of a main cylinder, a piston in said cylinder, a throttle valve connected with said piston, an auxiliary cylinder at each end ofV said main cylinder and each auxiliary cylinder having a piston, relief valve mechanism for said main cylinder controlled by said auxiliary cylinder pistons, a source of fluid pressure, a tracker board and music sheet, pneumatic means controlled by the passage of the music sheet over` the tracker board for controlling the connection of either auxiliary cylinder with said fluid pressure source, and' a fluid connection from each auxiliary cylinderto t-hc main cylinder exposed by the respective auxiliary cylinder pistons to receivefluid under pressure from said auxiliary cylinder.

5. In automatic tempov regulator mechanism, the combination of a main cylinder, a pistonA for said, cylinder, a throttle valve connected with saidv piston, `an auxiliary cylinder at each end of said main cylinder and each having a piston, reliefA valve mecl1` f anism for said main cylinder controlled by said auxiliary cylinder pistons, asource of i Huid pressure, a tracker board and music sheet traveling there'over, pneumatic means controlled by the passage of the music s eet over the tracker board for controlling'the connection of said fluid 'pressure source ith either auxiliary cylinder, admission of uild under pressure to either auxiliary cylinderl causing movement of the piston therein and shifting of the relief valve mechanism for the mam cylinder, and means controlled by such movement of the auxiliary cylinder pistons for connecting the main cylinder with said fluid pressure source whereby said `mainY cylinderlpiston is actuated and said throttle 'Valve adjusted.

6. Inautomatic regulator mechanism, the

combination of a main cylinder, a piston within said cylinder, an auxiliary cylinder In witness whereof, I hereunto subscribe Vmyname this 28th day of August, A. D., 41912.

PAUL B. oLsoN.

Y Witnesses: l

C. J. SCHMIDT, E. G. INGnnsoLL. 

